5-Oxa-cis-13-PGF1 compounds

ABSTRACT

This invention comprises certain analogs of the prostaglandins in which the double bond between C-13 and C-14 is of the cis configuration. Also provided in this invention, are novel chemical processes and novel chemical intermediates useful in the preparation of the above prostaglandin analogs. These prostaglandin analogs exhibit prostaglandin-like activity, and are accordingly useful for the same pharmacological purposes at the prostaglandins. Among these purposes are blood pressure lowering, labor induction at term, reproductive-cycle regulation, gastric antisecretory action, and the like.

The present application is a divisional application of Ser. No. 595,869,filed July 14, 1975, now issued as U.S. Pat. No. 4,026,909 on May 31,1977.

The present invention relates to prostaglandin analogs for which theessential material constituting a disclosure therefor is incorporated byreference here from U.S. Pat. No. 4,026,909, issued May 31, 1977.

I claim:
 1. A compound of the formula ##STR1## wherein g is 2, 3, or 4;WHEREIN Y is cis-CH=CH-;wherein M₁ is

    R.sub.5 OR.sub.6

or

    R.sub.5 OR.sub.6,

wherein R₅ and R₆ are hydrogen or methyl, with the proviso that one ofR₅ and R₆ is methyl only when the other is hydrogen; Wherein L₁ is

    R.sub.3 R.sub.4,

R₃ r₄, or a mixture of

    R.sub.3 R.sub.4

and

    R.sub.3 R.sub.4

wherein R₃ and R₄ are hydrogen, methyl, or fluoro, being the same ordifferent, with the proviso that one of R₃ and R₄ is fluoro only whenthe other is hydrogen or fluoro; Wherein m is one to 5, inclusive; andWherein R₁ is hydrogen, alkyl of one to 12 carbon atoms, inclusive,cycloalkyl of 3 to 10 carbon atoms, inclusive, aralkyl of 7 to 12 carbonatoms, inclusive, phenyl, phenyl substituted with one, two or threechloro or alkyl of 1 to 3 carbon atoms, inclusive, or apharmacologically acceptable cation.
 2. A compound according to claim 1,wherein g is
 4. 3. A compound according to claim 2, wherein m is
 3. 4. Acompound according to claim 3, wherein at least one of R₃ and R₄ isfluoro.
 5. A compound according to claim 4, wherein R₃ and R₄ are bothfluoro.
 6. A compound according to claim 5, wherein R₅ and R₆ arehydrogen.
 7. 15-EPI-2A,2B-Dihomo-16,16-difluoro-5-oxa-cis-13-PGF₁ α,methyl ester, a compound according to claim
 6. 8. A compound accordingto claim 3, wherein at least one of R₃ and R₄ is methyl.
 9. A compoundaccording to claim 8, wherein R₃ and R₄ are both methyl.
 10. A compoundaccording to claim 9, wherein R₅ and R₆ are both hydrogen. 11.15-EPI-2A,2B-Dihomo-16,16-dimethyl-5-oxa-cis-13-PGF₁α, methyl ester, acompound according to claim
 10. 12. A compound according to claim 3,wherein R₃, R₄, and R₅ are hydrogen. 13.15-epi-2a,2b-Dihomo-5-oxa-cis-13-PGF₁α, methyl ester, a compoundaccording to claim
 12. 14. A compound according to claim 1, wherein g is2.
 15. A compound according to claim 14, wherein m is
 3. 16. A compoundaccording to claim 15, wherein at least one of R₃ and R₄ is fluoro. 17.A compound according to claim 16, wherein both R₃ and R₄ are fluoro. 18.A compound according to claim 17, wherein R₅ and R₆ are hydrogen. 19.15-epi-16,16-Difluoro-5-oxa-cis-13-PGF₁α, methyl ester, a compoundaccording to claim
 18. 20. A compound according to claim 15, wherein atleast one of R₃ and R₄ is methyl.
 21. A compound according to claim 20,wherein R₃ and R₄ are both methyl.
 22. A compound according to claim 21,wherein R₅ and R₆ are hydrogen. 23.15-epi-16,16-Dimethyl-5-oxa-cis-13-PGF₁α, methyl ester, a compoundaccording to claim
 22. 24. A compound according to claim 15, wherein R₃,R₄, and R₅ are hydrogen.
 25. 15-epi-5-oxa-cis-13-PGF₁α, methyl ester, acompound according to claim 24.